4

# The resolved part of the resultant of two forces inclined at an angle θ in a given direction is equal to

The algebraic sum of the resolved parts of the forces in the given direction

The sum of the resolved parts of the forces in the given direction

The difference of the forces multiplied by the cosine of θ

The sum of the forces multiplied by the sine of θ

A. The algebraic sum of the resolved parts of the forces in the given direction

4

# The slope on the road surface generally provided on the curves is known as

Angle of friction

Angle of repose

Angle of banking

None of these

4

# The law of motion involved in the recoil of gun is

Newton's first law of motion

Newton's second law of motion

Newton's third law of motion

None of these

4

# The velocity ratio of a single purchase crab winch can be increased by

Increasing the length of the handle

Increasing the number of teeth of the pinion

All of the above

4

N-m

m/s

m/s2

4

mv2

mgv2

0.5 mv2

0.5 mgv2

4

P = mW - C

P = m/W + C

P = mW + C

P = C - mW

4

# When trying to turn a key into a lock, following is applied

Coplanar force

Non-coplanar forces

Moment

Couple

4

# The resultant of two forces P and Q acting at an angle θ is

√(P² + Q² + 2PQ sinθ)

√(P² + Q² + 2PQ cosθ)

√(P² + Q² - 2PQ cosθ)

√(P² + Q² - 2PQ tanθ)

4

n

2n

2n - 1

4

# Which of the following are vector quantities?

Angular displacement

Angular velocity

Angular acceleration

All of these

4

# Varingon's theorem of moments states that if a number of coplanar forces acting on a particle are in equilibrium, then

Their algebraic sum is zero

Their lines of action are at equal distances

The algebraic sum of their moments about any point in their plane is zero

The algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point.

4

ω

ωr

ω2r

ω/r

4

h/(kG² + h²)

(kG² + h²)/h

h²/(kG² + h²)

(kG² + h²)/h²

4

Halved

Doubled

None of these

4

# Moment of inertia is the

Second moment of force

Second moment of area

Second moment of mass

All of these

4

Ellipse

Hyperbola

Parabola

Circle

4

# A force acting on a body may

Change its motion

Balance the other forces acting on it

Retard its motion

All of the above

4

0° and 180°

180° and 0°

90° and 180°

90° and 0°

4

# When the spring of a watch is wound, it will possess

Strain energy

Kinetic energy

Heat energy

Electrical energy

4

15 N and 5 N

20 N and 5 N

15 N and 15 N

None of these

4

1/2

2/3

3/2

2/4

4

P × OA

P × OB

P × OC

P × AC

4

# A framed structure is imperfect, if the numbers of members are __________ (2j - 3).

Equal to

Less than

Greater than

Either (B) or (C)

4

30°

60°

90°

120°

4

# The weight of a body is due to

Gravitational pull exerted by the earth

Forces experienced by body in atmosphere

Force of attraction experienced by particles

Gravitational force of attraction towards the centre of the earth

4

# The coefficient of restitution for inelastic bodies is

Zero

One

Between zero and one

More than one

4

Same

Half

Double

None of these

4

m/min

Revolutions/min

Both (B) and (C)

4

bh3/4

bh3/8

bh3/12

bh3/36